Chris Horner's Bio Passport Problem

The American's Vuelta victory might be one of the greatest performances in the history of the sport—if only it hadn't taken place under a cloud of doping suspicion. Horner maintains he's clean, and...

What the Heck is the Biological Passport, Anyway?

To anti-doping authorities, it's the best way to ferret out cheaters in a wide range of sports. To cyclists and other athletes, it's a way to prove you're clean when critics claim you aren't.

Fast Times at Singletrack High

A new breed of jocks are taking over at Marin County’s Sir Francis Drake High School—endurance geeks who think spandex is cool, love getting dirty, and want to make mountain biking America’s favorite...

Beating the Boys

Recent endurance milestones in open-water swimming and ultra-distance trail running suggest that women may one day be faster than men

The Greatest Party on Two Wheels

They say you never ride alone at RAGBRAI. This year, 14,000 riders daily took part in 41st Annual Register’s Annual Great Bicycle Ride Across Iowa (RAGBRAI), a non-competitive race...